Search FAQs

What is LSC2B defined in IEC 62271-200?

LSC2B is defined in IEC 62271-200 standard as - Loss of Service Continuity category.
Medium voltage parts are compartmented and separated using metal partitions (PM class) which are connected to earth.

Busbars compartment
Compartment for switching device (withdrawable part - circuit breaker, fuse-contactor, disconnector truck or earthing truck)
MV cables connection compartment (earthing switch, current sensors, voltage transformers)

LSC category provides a guarantee that there is a high level of people protection; when a compartment containing a main circuit is open, the other compartments and/or functional units may remain energised.

MCset and PIX switchgears are LSC category of LSC2B.
Switchgear panel construction is with metal partition walls and isolating distances with compartmentalization to the busbar and to the cable.